Core-chaplet.



I E; W. SMITH.

GORE GHAPLET. APPLIOATiON FILED APILI], 1911; RENEWED APR. 11, 1912.

1,027,673. Patented May 2 ,1912.

COLUMIIA mooui-n co. WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

EUGENE W. SMITH, OF CHICAGO, ILLINOIS, ASSIGNOROF ONE-HALF TO HENRY N.

HUDSON," F CHIGAGO,-ILLINOIS.

CORE-GHAPLET.

Specification of Letters Patent.

Patented May 28,1912.

Application filed April 11, 1911, Serial No. 620,498. Renewed April 11,1912. Serial No. 690,045.

To all whom it may concern: Be it known that I, EUGENE VV. SMITH, acitizen of the United States, resident of -Chicago, in the county of(look and State of Illinois, have made a certain new and usefulInvention in Core-Chaplets; and I, declare the following to be a full,clear, and exact description. of the same, such as will enable othersskilled in the art to which it appertains to make and use the invention,reference being had to'the accompanying draw- .ings, and to letters orfigures of reference marked thereon, which form a part of thisspecification.

Figure 1 is a central longitudinal section, partly broken away of amolders flask and core, having my invention applied thereto.

Fig. 2 is a cross section of a molders flask and core, having theinvention applied thereto. Fig. 3 is a detail perspective view of theinvention. Fig. 4: is a detail end View of the same. Fig. is a detailside view of the same. Fig. 6 is a detail plan view of the same. Fig. 7is a detail perspective view of a form of the invention hav ing curvedbearing portions at one side thereof. Fig. 8 is a detail end view of thesame.

'The object of the invention is to provide, in the molders art, achaplet or anchor device of superior character and economic structure,and the invention consists in the novel construction and combinationsof.

separated from the matrix wall by the proper interval to allow for thethick mass of the casting "wall. The purpose of the chaplet or anchordevice is to support the corein the matrix, and, to that end, asufficient numberof these devices are adjusted between the matrixsurface and the wall or surface of the core, in different places aboutthe core, so that it will be held securely in position. And while theshapes of matrices and cores are of great variety, their surfaces arenevertheless made up of plane portions, curved portions, or plane andcurved portions, and as the surface wall of the core is which are ofcomparatively small size, can

be provided in sufliciently difierent shapes to meet the conditionsinvolved. F urthermore the chaplet herein provided is designed to haveconsiderable flexibility lengthwise, while transversely, or in thedirection of its thickness, it is quite stable or stiif.

The chapletsare indicated at g. Each of these'consists of a narrow, thinstrip or ribbon of'metal, preferably tin or tinned sheet metal, havingbeveled ends, which is bent into the form of a flattened spiral ofseveral substantially equal and parallel whirls, having the generaloutline of a parallelogram. Each whirl of the helix or spiral consistsof two oblique bars or hearing portions h, la,

of different angular directions, and two short end portions or strutbends m, designed to extend. between the core surface and matrix walland to sustain the pressure required to hold the core in position. Thebearing portions h, 71;, and k, 7:, of the chaplet are usually of planecharacter, being designed respectivelyto coincide in planular relationso as to provide flat bearings for the sand surface and the coresurface. Between these portions extends'throughout the chaplet a spiralinterval 39, which also separates the strut portions m. When thesurfaces of the core and matrix are ofcurved,

or curved and plane form respect-viely, the

spiral chaplet is constructed to suit such forms, in having the obliquebearing portions of one or both of its surfaces correspondingly shaped.In allcases, however,

the short strut-like end portions of each whirl are designed to havesufiicient width and thickness to provide proper strength of supportwhen several of these whirls are combined in the ribbon chaplet, asindicated in the drawings. This chaplet is ofelastic nature, and yetitpossesses considerable strength and stiflness to resist compression inany direction. At the same time it has flexibility, so that it is easilyadjusted to position, and because of its flexibility and the separationof its whirls along the bearing surfaces, it readily accommodates itselfto irregularities of surfaceof the core and mold; and because of thefrictional engagement due to the barred arrangement of its surfaces, itsbearings are rendered secure.

These Chaplets are designed to be made by winding or coiling the narrowribbon of metal around templets of various shapes, suited to thecharacter of the work in which the chaplets are to be used.

Having described the invention, what I claim and desire to secure byLetters Patent is:

1. A molders chaplet, consisting of a narrow flattened spiral ribbon ofsheet metal, having opposite oblique bearing portions connected at theirends by short strut bends, the whirls of the spiral being separated by acontinuous interval.

2. A helical chaplet consisting of a series of flattened whirls havingopposite oblique surface bearings connected by strut-like bends at theirends, and a spiral interval extending between said bearings and bends.

3. A molders chaplet of flattened helical form, consistingof a narrowmetal ribbon having flattened whirls in substantially parallel position.

In testimony whereof I affix my signature, in presence of two witnesses.

EUGENE W. SMITH.

Vitnesses:

GEORGE V. MOINTYRE, D. W. HEFFRON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

